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| 优化X射线同轴相位衬度成像的理论研究 | |
| 引用本文： | 王燕,陈家璧,张学龙.优化X射线同轴相位衬度成像的理论研究[J].光学与光电技术,2008,6(1):78-81,92. |
| 作者姓名： | 王燕 陈家璧 张学龙 |
| 作者单位： | 1. 上海理工大学光电学院,上海,200093;江西师范大学理电学院,江西,南昌,330022 2. 上海理工大学光电学院,上海,200093 3. 上海理工大学医疗器械学院,上海,200093 |
| 基金项目： | 上海市高等学校科技发展基金 , 上海市科研项目 |
| 摘 要： | 采用同轴相位衬度成像方法，基于PGW理论获得的频域相位衬度传递函数，对于理想光源和多色X射线源，用计算机模拟分析了如何选择物像距离和空间频率以获取最佳相位衬度像。实际应用中要综合考虑具体成像实验装置对于物像距离的可调范围以及成像分辨率的要求。对于具有一定谱宽的X射线源，应选择谱宽尽量小的源，以获得含信息量丰富、分辨率高的图像。 |
| 关 键 词： | X射线 相位衬度传递函数 同轴相位衬度成像 |
| 文章编号： | 1672-3392（2008）01-0078-04 |
| 收稿时间： | 2007-07-25 |
| 修稿时间： | 2007-09-10 |
Theoretical Research on Optimize the In-line X-ray Phase Contrast Imaging |
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| WANG Yan,CHEN Jia-bi,ZHANG Xue-long.Theoretical Research on Optimize the In-line X-ray Phase Contrast Imaging[J].optics&optoelectronic technology,2008,6(1):78-81,92. | |
| Authors: | WANG Yan CHEN Jia-bi ZHANG Xue-long |
| Institution: | WANG Yan CHEN Jia-bi College of Oprics , Electronic Information Engineering,Shanghai University of Science , Technology,Shanghai 200093,China College of Physics , Communication Electronics,Jiangxi Normal University,Nanchang 330022,China ZHANG Xue-long College of Medical Instrumentation,China |
| Abstract: | Based on the frequency domain phase contrast transfer function obtained by PGW theory, an in-line phase contrast imaging method is put forward. In view of the ideal and multiple chromatic X-ray sources, how to chose the object-image space and spatial frequency to acquire the optimal phase contrast imaging are simulated and analyzed. Tunable range of the object-image distance and the imaging resolution demanded for the experimental setup should be considered in practical application. For X-ray source with a certain spectral width, the source with minimum spectral width as possible to get the high resolution images with rich information should be selected. |
| Keywords: | X-ray phase contrast transfer function in-line phase contrast imaging |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |